> On Tue, 3 Apr 2012 22:05:22 +0200
> bg at lysator.liu.se wrote:
>
>> http://www.aeroantenna.com/PDF/AT575-90_G.pdf
>
> It might be a stupid question, but what is the spike at the top for?
>
> Attila Kinali
It is there to make birds feel unconfortable.
--
Björn